You can apply the following patch to improve the documentation of Polyhedron::shrink_bounding_box() as discussed in http://www.cs.unipr.it/pipermail/ppl-devel/2005-July/006191.html Tested with Doxygen 1.4.5. --- patch begin Index: Polyhedron.defs.hh =================================================================== RCS file: /cvs/ppl/ppl/src/Polyhedron.defs.hh,v retrieving revision 1.283 diff -c -d -r1.283 Polyhedron.defs.hh *** Polyhedron.defs.hh 22 Sep 2005 16:08:58 -0000 1.283 --- Polyhedron.defs.hh 4 Oct 2005 20:00:13 -0000 *************** *** 728,733 **** --- 728,741 ---- \param complexity The complexity class of the algorithm to be used. + First, the smallest bounding box \f$B\f$ containing the polyhedron + is computed; then \p box is (destructively) intersected with + \f$B\f$ by using only the methods of Box listed in the + documentation. + + Notice that there is no way <CODE>shrink_bounding_box()</CODE> + can obtain information from the \p box parameter. + The template class Box must provide the following methods, whose return values, if any, are simply ignored. \code --- patch end Yours, Andrea.